5-methyltetrahydropteroyltriglutamate--homocysteine methyltransferase 2
S-Adenosylmethionine + Selenomethionine ↔ S-Adenosylhomocysteine + S-Methyl-L-methionine
Methylselenic acid + NADP → Hydrogen Ion + NADPH + methylselenol
5-Methyltetrahydropteroyltri-L-glutamate + Selenohomocysteine → Selenomethionine + Tetrahydropteroyltri-L-glutamate
2-Aminoacrylate + 2-Iminopropanoate + Selenocystathionine + Water → 2-Aminoacrylate + 2-Iminopropanoate + Ammonia + Pyruvic acid + Selenohomocysteine
O-Succinyl-L-homoserine + Selenocysteine → Selenocystathionine + Succinic acid
Selenocysteine + an unknown reduced electron acceptor ← Hydrogen selenide + L-Alanine + an unknown oxidized electron acceptor
Hydrogen selenide + NADP ← Hydrogen Ion + NADPH + Selenite
Methionine--tRNA ligase, chloroplastic/mitochondrial
Cystathionine gamma-synthase 1, chloroplastic
Selenomethionine (↔) Transport: Arabidopsis thaliana, Cell, Chloroplast to Arabidopsis thaliana, Cell, Cytoplasm
Selenomethionine (→) Transport: Arabidopsis thaliana, Cell, Chloroplast to Arabidopsis thaliana, Cell, Cytoplasm
Hydrogen selenide (←) Transport: Arabidopsis thaliana, Cell, Chloroplast to Arabidopsis thaliana, Cell, Cytoplasm
Adenosine triphosphate + Selenomethionine + tRNA(Met) → Adenosine monophosphate + Diphosphoric acid + Selenomethionyl-tRNA(Met)
2-Aminobut-2-enoate + 2-Iminobutanoate + Selenomethionine + Water → 2-Aminobut-2-enoate + 2-Iminobutanoate + 2-Ketobutyric acid + Ammonia + methylselenol